package day04;

public class ForDemo {
    public static void main(String[] args) {
        for (int i = 0; i < 5; i++) {
            System.out.println("HelloWorld!");
        }
        System.out.println("=================");

        for (int i = 1; i <= 9; i++) {
            for (int j = 1; j <= i; j++) {
                System.out.print(j+ "x" + i + "=" + i * j + "\t");
            }
            System.out.println();
        }
        System.out.println("=================");

        for (int i = 1; i <= 9; i+=2) {
            for (int j = 1; j <= i; j+=2) {
                System.out.print(j+ "x" + i + "=" + i * j + "\t");
            }
            System.out.println();
        }
        System.out.println("=================");

        for (int i = 9; i >= 1; i--) {
            for (int j = 9; j >= i; j--) {
                System.out.print(j+ "x" + i + "=" + i * j + "\t");
            }
            System.out.println();
        }

    }
}
